JP2020042998A - High frequency connector and assembly method of high frequency connector - Google Patents

Abstract

To provide a high frequency connector capable of increasing tenacity of a shield wire, while improving shield performance, and to provide an assembly method of a high frequency connector.SOLUTION: A high frequency connector includes a shield wire 1, an inner terminal 2 for connection with a core wire 11, and an outer terminal 3 in which the inner terminal 2 is placed, and for connection with a braiding 12. The outer terminal 3 includes a first barrel 31 for crimping the braiding 12, and a second barrel 32 articulated to the first barrel 31, and crimping a covering 14, the second barrel 32 includes a first crimp piece 321 having an insertion port 321H, and a second crimp piece 322 having a protrusion 323 entering into the insertion port 321H, where the first and second crimp pieces 321, 322 dig into the covering 14 in a state where the protrusion 323 enters into the insertion port 321H, while being caulked and displacing.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a high-frequency connector and a method for assembling the high-frequency connector.

  2. Description of the Related Art Conventionally, shielded electric wires corresponding to high frequencies have been used to transmit high-frequency electric signals to control units of various electric components such as car navigation systems mounted on automobiles and the like. The shielded electric wire has a structure in which the outer periphery of an insulating coating covering the outer periphery of a core wire made of a conductive material is covered with a braid, and the braid blocks propagation of external electric influences, thereby enabling high-frequency propagation.

  A high-frequency connector is used for electrical connection of the shielded wires. The high-frequency connector includes the shielded electric wire, an inner terminal connected to the core wire, and an outer terminal having the inner terminal disposed therein and having a barrel crimped to a braid. For example, Patent Literature 1 proposes that a barrel of an outer terminal is crimped to an end of a shielded electric wire.

JP-A-2017-168440

  However, in the related art as described in Patent Literature 1, a gap due to springback may occur in the barrel. Therefore, a situation may arise in which the barrel is difficult to make the outer terminal adhere to the shielded wire. Therefore, not only may the shielding performance be reduced, but also the holding power of the shielded wire may be reduced.

  The present disclosure has been made in view of such a situation, and it is intended to increase the holding power of a shielded electric wire while improving shield performance.

  A high-frequency connector according to a first aspect of the present disclosure includes a core wire, an insulator covering the outer periphery of the core wire, a braid covering the outer periphery of the insulator, and a sheath covering the outer periphery of the braid, and a shielded wire having a sheath. An inner terminal connected to the core wire, and an inner terminal in which the inner terminal is disposed, and an outer terminal connected to a braid exposed portion exposing the braid, wherein the outer terminal includes: A first barrel for crimping the braided exposed portion, a second barrel connected to the first barrel and crimping the outer cover, and the second barrel has a first crimping piece having an insertion port, A second crimping piece having a protrusion that enters the insertion port, and the first crimping piece and the second crimping piece are caulked by caulking and displaced, while the distal end side of the protrusion is the insertion piece. In front of the mouth It is intended to bite into the outer skin.

  Also, in the high-frequency connector according to the first aspect of the present disclosure, the second crimping piece extends from the first crimping piece and supports the protrusion, and a base end side of the protrusion. And a step portion on which the protrusion is arranged by providing a step outside the support portion, wherein the second barrel has an end surface side of the first crimping piece on a rear surface base end side of the step portion. It is preferable that a cylindrical internal space capable of storing the outer skin is formed in the state of being inserted.

  Further, a method for assembling a high-frequency connector according to a second aspect of the present disclosure includes a core wire, an insulator covering the outer periphery of the core wire, a braid covering the outer periphery of the insulator, and a skin covering the outer periphery of the braid, A shielded electric wire having an inner terminal connected to the core wire, and an outer terminal connected to a braid exposed portion in which the inner terminal is disposed and the braid is exposed. The outer terminal includes a first barrel for crimping the braided exposed portion, and a second barrel connected to the first barrel and crimping the outer cover, wherein the second barrel has an insertion port. A first crimping piece having a second crimping piece having a projection that enters the insertion port, wherein the assembling method includes the step of causing the projection to enter the insertion port to be in a closed state, Second barrel Inserting the shielded electric wire into the inner space formed by crimping and displacing the first crimping piece and the second crimping piece by caulking, and inserting the distal end side of the protrusion into the insertion port. And causing the outer skin to dig into the outer skin in a state of being laid.

  According to the first aspect and the second aspect of the present disclosure, it is possible to increase the holding power of the shielded electric wire while improving the shielding performance.

1 is an exploded perspective view of a high-frequency connector according to a first embodiment to which the present disclosure is applied. FIG. 2 is an external view of a second barrel 32 according to a first embodiment of the present disclosure before crimping. FIG. 3 is a cross-sectional view taken along line II of FIG. 2. It is an outline view after crimping of the 2nd barrel 32 concerning Embodiment 1 to which this indication is applied. FIG. 5 is a sectional view taken along the line II of FIG. 4. FIG. 10 is an external view of a second barrel 42 according to a second embodiment of the present disclosure before crimping. FIG. 7 is a cross-sectional view taken along line II-II of FIG. 6. It is an outline view after crimping of the 2nd barrel 42 concerning Embodiment 2 to which this indication is applied. FIG. 9 is a sectional view taken along line II-II of FIG. 8. FIG. 9 is another sectional view taken along the line II-II of FIG. 8.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the following embodiments.

Embodiment 1 FIG.
FIG. 1 is an exploded perspective view of the high-frequency connector according to Embodiment 1 to which the present disclosure is applied. FIG. 2 is an external view of the second barrel 32 before crimping according to the first embodiment to which the present disclosure is applied. FIG. 3 is a cross-sectional view taken along line II of FIG. FIG. 4 is an external view of the second barrel 32 according to the first embodiment of the present disclosure after crimping. FIG. 5 is a sectional view taken along the line II of FIG. As shown in FIG. 1, the high-frequency connector includes a shielded electric wire 1, an inner terminal 2, and an outer terminal 3. The shielded electric wire 1 includes a core wire 11, an insulator 12 covering the outer periphery of the core wire 11, a braid 13 covering the outer periphery of the insulator 12, and an outer cover 14 covering the outer periphery of the braid 13. The shielded electric wire 1 is arranged in the order of the core wire 11, the insulator 12, the braid 13, and the outer skin 14 from the center to the outside. The shielded electric wire 1 has a core exposed portion 11A in which the outer sheath 14, the braid 13 and the insulator 12 are removed to expose the core wire 11, and the outer sheath 14 and the braid 13 are removed and the insulator 12 is exposed in order from the distal end side. The exposed insulator 12A and the exposed braid 13A in which the outer skin 14 is removed to expose the braid 13 are formed.

  The core wire 11 is made of a conductive metal such as copper. The insulator 12 is made of an insulating synthetic resin. The braid 13 is formed by braiding a thin wire made of a metal such as copper into a net shape and a cylindrical shape. The braid 13 is connected to a ground or the like via a high-frequency connector and electronic devices connected to the high-frequency connector. The outer cover 14 is a member made of an insulating synthetic resin, and is a member for insulating and protecting the core wire 11 and the braid 13 accommodated therein. The inner terminal 2 is formed by subjecting a conductive metal member to press working or the like, one of which is connected to the core wire 11 and the other of which is connected to the female terminal of the mating connector. The outer terminal 3 is formed by subjecting a conductive metal member to press working or the like. The outer terminal 3 has the inner terminal 2 disposed therein and is connected to a braid exposed portion 13A exposing the braid 13. That is, the outer terminal 3 houses the inner terminal 2 in which the end of the inner terminal 2 is crimped to the core wire exposed portion 11A, the insulator exposed portion 12A, and the braided exposed portion 13A.

  Although not shown, between the inner terminal 2 and the outer terminal 3, an insulating synthetic resin, which is a dielectric having a predetermined relative permittivity, is disposed as an inner housing. It is supported in the terminal 3 while being insulated from the outer terminal 3. Although not shown, the outer terminal 3 is provided with an outer housing formed around the outer terminal 3 using an insulating synthetic resin.

  The outer terminal 3 has a first barrel 31 and a second barrel 32. The first barrel 31 includes a first semi-cylindrical portion 311 and a second semi-cylindrical portion 312, and is braided by caulking the first semi-cylindrical portion 311 and the second semi-cylindrical portion 312. The exposed portion 13A is crimped. The second barrel 32 is connected to the first barrel 31 and presses the outer cover 14. Specifically, the second barrel 32 includes a first crimping piece 321 and a second crimping piece 322. The first crimping piece 321 has an insertion port 321H. The second crimping piece 322 has a protrusion 323 that enters the insertion opening 321H. The second barrel 32 bites into the outer skin 14 with the tip 323B of the protrusion 323 inserted into the insertion opening 321H while the first crimping piece 321 and the second crimping piece 322 are caulked and displaced by caulking.

  The second crimping piece 322 includes a support portion 322A and a step portion 322B. The support portion 322A extends from the first crimping piece 321 and supports the protrusion 323. The step portion 322B is provided on the base end 323A side of the projecting portion 323, and arranges the projecting portion 323 with a step outside the support portion 322A. The second barrel 32 forms a cylindrical internal space capable of accommodating the outer skin 14 in a state where the end face 321B side of the first crimping piece 321 enters the back base end 322BA side of the step portion 322B. Therefore, the opening 325 is formed in the second barrel 32, and the shielded electric wire 1 can be inserted through the opening 325. Note that FIG. 5 shows an example in which the second barrel 32 is in a state where the end face 321B of the first crimping piece 321 enters the rear surface base end 322BA of the step portion 322B, The end surface 321B of the crimping piece 321 does not need to reach the back surface base end 322BA of the step portion 322B, and as described above, the end surface 321B side of the first crimping piece 321 has entered the back surface base end 322BA side of the step portion 322B. Any condition is acceptable.

  Next, an assembling process which is an assembling method of the high-frequency connector will be described. First, the core wire exposed portion 11A, the insulator exposed portion 12A, and the braided exposed portion 13A are formed by processing the shielded electric wire 1. Next, the inner terminal 2 is connected to the core wire 11 by caulking the end of the inner terminal 2 to the core wire exposed portion 11A. Next, the protrusion 323 is inserted into the insertion port 321H, and the outer terminal 3 is closed. Thus, a cylindrical internal space in which the outer shell 14 can be stored by the second barrel 32 is formed. Next, the shielded electric wire 1 is inserted into the internal space formed by the second barrel 32. Next, the first crimping piece 321 and the second crimping piece 322 are crimped and displaced by crimping, and the tip 323B of the protrusion 323 is cut into the outer skin 14 in a state of being inserted into the insertion opening 321H. Thus, a high-frequency connector is obtained.

  As described above, in the present embodiment, in the second barrel 32, the distal end 323B side of the projection 323 is inserted into the insertion opening 321H while the first crimping piece 321 and the second crimping piece 322 are displaced by being crimped. It penetrates into the outer skin 14 in the state of having penetrated. Therefore, even if springback occurs in the second barrel 32, the protrusion 323 bites into the outer skin 14 in a state of being inserted into the insertion opening 321 </ b> H, and thus the first crimping piece 321 and the second crimping piece 322 overlap each other. Since the wrap is maintained, no useless gap is generated between the second barrel 32 and the outer cover 14 of the shielded electric wire 1. Therefore, it is possible to increase the holding force of the shielded electric wire 1 while improving the shielding performance.

  Further, in the present embodiment, the second barrel 32 forms a cylindrical internal space capable of accommodating the outer skin 14 in a state where the end face 321B side of the first crimping piece 321 enters the back base end 322BA side of the step portion 322B. I do. Therefore, a cylindrical shape is formed in which the tip 323B of the protrusion 323 is inserted into the insertion opening 321H, and is formed by the end face 321B side of the first crimping piece 321 and the back base end 322BA side of the step 322B. Since the shielded electric wire 1 is inserted into the internal space, a useless gap due to springback is hardly formed along a radial direction outside the central axis of the shielded electric wire 1. Therefore, even if a high-frequency signal is transmitted to the shielded electric wire 1, a portion where the impedance becomes locally high does not occur in the outer terminal 3, so that the deterioration of the high-frequency signal can be prevented with a small number of components.

Embodiment 2. FIG.
In the second embodiment, the same configurations and functions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. FIG. 6 is an external view of the second barrel 42 before crimping according to the second embodiment to which the present disclosure is applied. FIG. 7 is a sectional view taken along line II-II of FIG. FIG. 8 is an external view of the second barrel 42 after crimping according to the second embodiment to which the present disclosure is applied. FIG. 9 is a sectional view taken along line II-II of FIG. FIG. 10 is another sectional view taken along line II-II of FIG. In the second embodiment, the structure of the outer terminal 4 is different from the structure of the outer terminal 3 in the first embodiment.

  Specifically, as shown in FIG. 6, the outer terminal 4 includes a first barrel 41 and a second barrel 42. The first barrel 41 includes a first semi-cylindrical portion 411 and a second semi-cylindrical portion 412. Since the first barrel 41 has the same configuration and function as the first barrel 31, detailed description thereof is omitted. On the other hand, the second barrel 42 includes a first crimping piece 421 and a second crimping piece 422, and is configured in a comb shape.

  As shown in FIG. 7, the first crimping piece 421 is formed in a tapered shape having a tapered surface on the rear surface side of the tip of the comb tooth, and the second crimping piece 422 is formed in a rectangular shape on the tip side of the comb tooth. It has a shape. Therefore, as shown in FIG. 8, a cylindrical internal space can be formed inside by meshing with each other. With such a configuration, when the first crimping piece 421 and the second crimping piece 422 are engaged with each other, as shown in FIG. Is displaced. As a result, the back side of the front end of the comb-like shape of the first crimping piece 421 and the front side of the front end of the comb-like shape of the second crimping piece 422 adhere to each other without gap. Therefore, the shielding performance can be improved.

  As shown in FIG. 10, in the second crimping piece 422, the surface on the tip surface side of the comb tooth shape may be formed in a tapered shape having a tapered surface. With such a configuration, the surface of the first crimping piece 421 on the tip back surface side of the comb tooth shape and the surface of the second crimping piece 422 on the tip surface side of the comb tooth shape are each configured to have a tapered shape. Therefore, the tip side of the comb-like shape of the first crimping piece 421 and the tip side of the comb-like shape of the second crimping piece 422 are in close contact with each other without any gap. Therefore, the shielding performance can be particularly remarkably improved.

  According to the above description, in the present embodiment, at least one of the distal ends of the comb teeth of the first crimping piece 421 and the second crimping piece 422 is configured to be tapered, so that the comb tooth shape of the first crimping piece 421 is formed. And the tip side of the comb teeth of the second crimping piece 422 are in close contact with each other without a gap, so that the shielding performance can be further improved.

  As described above, the high-frequency connector to which the present disclosure is applied has been described based on the embodiment. However, the present disclosure is not limited to this, and may be modified without departing from the gist of the present disclosure.

  For example, in the present embodiment, an example has been described in which the protrusion 323 and the insertion port 321H are configured as one set in the second barrel 32, but the present invention is not particularly limited to this. For example, a plurality of sets of the protrusion 323 and the insertion port 321H may be configured in the second barrel 32.

  Further, for example, in the present embodiment, an example of the configuration in which the outer terminal 3 is a closed barrel has been described, but the present invention is not particularly limited to this. For example, an example in which the outer terminal 3 is an open barrel may be used.

DESCRIPTION OF SYMBOLS 1 Shield electric wire 11 core wire, 11A core wire exposure part, 12 insulator, 12A insulator exposure part 13 braid, 13A braid exposure part, 14 outer skin 2 inner terminal 3 outer terminal 31 first barrel, 311 first semi-cylindrical part, 312th Half cylinder part 32 Second barrel 321 First crimping piece, 321B end face, 321H insertion opening 322 Second crimping piece, 322A Supporting part, 322B Stepped part, 322BA Back base 323 Projection, 323A Base, 323B Tip 325 Opening Part 4 Outer terminal 41 First barrel, 411 First semi-cylindrical part, 412 Second semi-cylindrical part 42 Second barrel, 421 First crimping piece, 422 Second crimping piece

Claims (3)

A shield wire having a core wire, an insulator covering the outer periphery of the core wire, a braid covering the outer periphery of the insulator, and a skin covering the outer periphery of the braid,
An inner terminal connected to the core wire;
An outer terminal in which the inner terminal is disposed and connected to a braid exposed portion exposing the braid;
A high-frequency connector comprising:
The outer terminal is
A first barrel for crimping the braided exposed portion,
A second barrel connected to the first barrel and crimping the outer cover,
With
The second barrel,
A first crimping piece having an insertion port,
A second crimping piece having a protrusion that enters the insertion port,
With
While the first crimping piece and the second crimping piece are crimped and displaced by crimping, they bite into the outer skin in a state where the tip side of the protrusion enters the insertion port,
A high-frequency connector characterized in that: The second crimping piece,
A support portion extending from the first crimping piece and supporting the protrusion,
A step portion provided on the base end side of the projection portion, and a step portion on which the projection portion is arranged with a step outside the support portion;
With
The second barrel,
In a state in which the end face side of the first crimping piece has entered the back surface base end side of the step portion, forms a cylindrical internal space capable of storing the outer skin,
The high-frequency connector according to claim 1, wherein: A shield wire having a core wire, an insulator covering the outer periphery of the core wire, a braid covering the outer periphery of the insulator, and a skin covering the outer periphery of the braid,
An inner terminal connected to the core wire;
An outer terminal in which the inner terminal is disposed and connected to a braid exposed portion exposing the braid;
A method for assembling a high-frequency connector comprising:
The outer terminal is
A first barrel for crimping the braided exposed portion,
A second barrel connected to the first barrel and crimping the outer cover,
With
The second barrel,
A first crimping piece having an insertion port,
A second crimping piece having a protrusion that enters the insertion port,
With
The assembling method includes:
A step of causing the protrusion to enter the insertion port and close the same;
A step of inserting the shielded wire into the internal space formed by the second barrel,
The first crimping piece and the second crimping piece are caulked and displaced by caulking, and a step of digging into the outer skin in a state where the tip side of the protrusion enters the insertion port,
Comprising,
A method for assembling a high-frequency connector, comprising:

Images